Portable steam-boiler furnace



2 Sheets-Sheet 1.

(No Model.)

W'. J. P. LIDD-ELL.

PORTABLE STEAM BOILER FURNACE.

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W. J, P. LIDDELL. PORTABLE STEAM BOILER FURNACE. No. 344,970. Patent-ed July 6, 1886.

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NlTED STATES PATENT OFFICE.

VALTER J. F. LIDDELL, OF CHARLOTTE, NORTH CAROLINA.

PORTABLE STEAM- Application tiled March 10,1886.

To all whom it may concern.-

Be it known that LWALTER J. F. LIDDnLL, ofOharlotte, county of Mecklenburg,and State of North Carolina, have invented a new and useful Improvement in Portable Steam-Boiler Furnaces,of which thefollowing is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification.

My invention relates to that class of portable steam-boilers having a bricleliucd fire-pot attached and in condition for use prior to its being sent out from the factory or shop, and adapted to be moved or transported in such condition to the place where it is to be set up and used; and its object is to give such form or construction to the fire-pot as will prevent the accidental displacement of the lining of tirebrick under the jolting incident to its removal or transportation from place to place.

The invention consists in making the side and end walls of the fire-pot tlaring or inclining outward from their lower edges upward in such manner that the lining of tire-brick, resting against said walls with the upper and lower sides of the bricks in planes at right angles,orthereabout,to said walls,will be held against displacement by its own gravity, which tends to hold the bricks firmly in place against the flaring sides or walls of the tire pot or box, as will appear. 4

In the accompanying drawings, Figure 1 represents a side elevation of a portable boiler with my improved tire-pot applied. Fig. 2 represents a vertical longitudinal section through the same. Fig. 3 is a vertical trans verse section taken on the line w m, Fig. 2; and- Fig. 4 is a similar section taken on the line 3 3/. Fig.

The form of the boiler shown is the same as that shown and described in Letters Patent granted to me February 29, 1876, No. 174,139, and it will not therefore be described further than is necessary to an understanding of my present improvement.

A indicates the boiler proper, of the horizontal type, with its heads or ends perforated to receive the ends of the connecting firetubes, which open at one end into the fire-pot B, and at the opposite end into the smokebox O,with which the smokestack D is connected, as shown, or in any usual or preferred manner.

BOILER FURNACE.

PECFFECATEON forming part of Letters Patent No. 344,970, dated July 6, 1886.

Serial No. 194,689. (No model.)

The end of the boiler connected with the firepot projects within the latter and over the grate (indicated at A) a distance of, say, twothirds, more or less, of the length of the latter from front to rear, as shown, so as to bring themain body of the fire under said end of the boiler, and thereby compel the products of combustion to pass uparound and forward to the forward end of the boiler to reach the point ofescape into and through the fire-tubes. The sides a and end walls, a a, as indicated by the drawings, are made flaring or inclining outwardly from their lower edges, and preferably of boiler-plate iron; but they may be of cast-iron, if desired, and are provided at or near theplauc of the grate with suitable ledges or flanges, I), forming a foot-support for the fire-brick lining to said walls. These flanges maybe either horizontal, as shown, or they may be slightly inclined, so as to be at right angles to the sides with which they are connected. WVhen they are made horizontal, they should be provided each with a vertical rib on its inner edge, as indicated at b, to prevent lateral movement or displacement of the lower layer of brick resting thereon, and the latter should be made tapering, as indicated, so as to bring their upper faces into a plane at right angles, or thereabout, to the adjacent side wall. This arrangement serves to give a corresponding inclination outward to the succeeding layers of the brick lining, in which position they will be held, crowded outward against the supporting wall by their own gravity. The side walls, a, extend sufficiently above the horizontal diameter of the boiler to accommodate a brick lining removed from the boiler up to or about to the plane of such diameter, as shown in Fig. 3. Above said plane the side walls are curved or bent inward, as shown at c leaving space for the brick lining, and are united to the sides of the boiler by riveting, or in any suitable manner. The portion of the fire-pot in front of the forward end of the boileris provided with a brick arch, E, arranged above the plane of the upper tubes, as shown in Fig. 4, and which serves to deflect the products of combustion into said tubes, and to prevent their reaching the otherwise unprotected upper portion of the fire-pot easing. The front wall of the fire-pot is provided above the usual fire-door, F, with a second 1. The combination, with a portable boiler, of a rectangular fire-pot having the flaring or outwardly-inclined side and end walls, a firebriek lining applied thereto, built up of'firebrick in successive layers, inclining outward and adapted to be held in place against the inclined casing-walls by gravity, and a supplemental door facilitating the lining 'of said fire=pot, all substantially as andfor the purpose described.

2. The combination,with a portable tubularboiler, of the fire-pot having the flaring side and end walls, the fire-brick lining applied thereto, as described, and provided in its forward end above the fire-door with a second door or opening,for facilitating the laying and removal of the brick lining, substantially as k described.

In testimony whereof I have hereunto set my hand this 5th day of March, A. D. 1886.

\VALTER J. F. LIDDELL.

\Vitnesscs:

.T. R. HOLLAND, EVA LIDDELL. 

